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자료유형
학술저널
저자정보
저널정보
한국유방암학회 Journal of Breast Cancer Journal of Breast Cancer Vol.17 No.2
발행연도
2014.1
수록면
121 - 128 (8page)

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Purpose: Breast cancer displays varying molecular and clinicalfeatures. The ability to form breast tumors has been shown byseveral studies with aldehyde dehydrogenase 1 (ALDH1) positivecells. The aim of this study is to investigate the association betweenALDH1 expression and clinicopathologic characteristics ofinvasive ductal carcinoma. Methods: We investigated breast cancertissues for the prevalence of ALDH1+ tumor cells and theirprognostic value. The present study included paraffin-embeddedtissues of 70 patients with or without recurrences. We appliedimmunohistochemical staining for the detection of ALDH1+ cells. Analysis of the association of clinical outcomes and molecularsubtype with marker status was conducted. Results: ALDH1+and ALDH1– tumors were more frequent in triple-negative breastcancers and in luminal A breast cancers, respectively (p<0.01). ALDH1 expression was found to exert significant impact on diseasefree survival (DFS) (ALDH1+ vs. ALDH1–, 53.1±6.7 monthsvs. 79.2±4.7 months; p=0.03) and overall survival (OS) (ALDH1+vs. ALDH1–, 68.5±4.7 months vs. 95.3±1.1 months; p<0.01). Intriple-negative breast cancer (TNBC) patients, DFS and OSshowed no statistical differences according to ALDH1 expression(ALDH1+ vs. ALDH1–, 45.3±9.4 months vs. 81.3±7.4 months,p=0.52; 69.0±7.5 months vs. 91.3±6.3 months, p=0.67). However,non-TNBC patients showed significant OS difference betweenALDH1+ and ALDH1– tumors (ALDH1+ vs. ALDH1–, 77.6±3.6 months vs. 98.0±1.0 months; p=0.04) with no statistical differenceof DFS (ALDH1+ vs. ALDH1–, 60.5±8.0 months vs. 81.8±4.6 months; p=0.27). Conclusion: Our findings suggest that theexpression of ALDH1 in breast cancer may be associated withTNBC and poor clinical outcomes. On the basis of our findings,we propose that ALDH1 expression in breast cancer could becorrelated with poor prognosis, and may contribute to a moreaggressive cancer phenotype.

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